| Exam Board | Edexcel |
|---|---|
| Module | S2 (Statistics 2) |
| Marks | 5 |
| Paper | Download PDF ↗ |
| Topic | Central limit theorem |
| Type | Sampling distribution theory |
| Difficulty | Easy -1.8 This is a pure definitional question requiring only recall of basic statistical terminology (statistic, sampling distribution) with no calculation or application. It's significantly easier than average A-level questions which typically require problem-solving or technique application. |
| Spec | 2.01b Informal inferences: from samples |
A random sample $X_1, X_2, ..., X_n$ is taken from a finite population. A statistic Y is based on this sample.
\begin{enumerate}[label=(\alph*)]
\item Explain what you understand by the statistic Y. [2]
\item Give an example of a statistic. [1]
\item Explain what you understand by the sampling distribution of Y. [2]
\end{enumerate}
\hfill \mbox{\textit{Edexcel S2 Q2 [5]}}